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Re: Some (small) c++ compilation profiling data (oprofile)
- From: Andi Kleen <ak at suse dot de>
- To: Will Cohen <wcohen at redhat dot com>
- Cc: Andi Kleen <ak at suse dot de>, gcc at gcc dot gnu dot org
- Date: Fri, 17 May 2002 23:40:01 +0200
- Subject: Re: Some (small) c++ compilation profiling data (oprofile)
- References: <Pine.LNX.email@example.com> <3CE54609.firstname.lastname@example.org> <email@example.com> <3CE576DD.firstname.lastname@example.org>
On Fri, May 17, 2002 at 05:32:13PM -0400, Will Cohen wrote:
> The APIC may not be in the mobile Pentium III processor, but somewhere
> in the supporting chipset used on the Dell Inspiron 4100 there is an
> APIC. The /var/log/messages has entries indicating it is finding APIC
> and the profiling I am doing is definitely using the Pentium III
> performance monitoring hardware, not the RTC based sampling.
That's the global APIC. Local APIC is a different thing.
But when it works then it is ok of course.
You can check if you have a local one by looking at /proc/cpuinfo
for apic in the flags line. Normally p3-mobile doesn't have one and
oprofile may know this.